A kind of gel coat resin, gel coat resin system and both preparation methods

Abstract

The invention discloses gel coat resin with the advantages of low viscosity, good heat resistance and high mechanical strength, comprising 40-90 parts by weight of matrix resin and 0.5-15 parts by weight of assistant, wherein the matrix resin is selected from epoxy resin, bismaleimide resin and hydroxy acrylic resin, and the assistant comprises a thixotropic agent. The invention further provides a preparation method of the gel coat resin, comprising the following steps: uniformly stirring the matrix resin and other assistants at normal temperature and normal pressure, and then adding the thixotropic agent and uniformly stirring, vacuumizing under a vacuum degree until no bubbles exist in a reaction kettle, and stopping vacuumizing. The operation is simple and convenient. The invention also discloses a gel coat resin system comprising a component A and a component B at the weight ratio of 100: (10-25), wherein the component A is the gel coat resin, and the component B comprises a curing agent and has good performance. The invention also discloses a preparation method of the gel coat resin system, comprising the following steps: preparing the component A, uniformly stirring the curing agent and an accelerant to obtain the component B, and uniformly mixing the component A and the component B. The gel coat resin has the advantages of short curing time, environment friendliness and good product performance.

Description

technical field [0001] The invention relates to the field of resins, in particular to a gel coat resin, a gel coat resin system based on the gel coat resin and a preparation method thereof. Background technique [0002] Gel coat resin is a special resin for making the gel coat resin layer of FRP products. Gel coat resin mainly plays the role of protecting FRP products, prolonging its service life and decorating its surface. It has a vital impact on the quality of FRP products. Therefore, the mold The gel coat resin layer should have good water resistance, chemical resistance, corrosion resistance, heat resistance and impact resistance. When used on the surface of the product, the gel coat resin layer should also have good gloss, light color, and beautiful appearance. The gel coat resin should be It has good sag performance and is easy to operate. However, due to the influence of the resin matrix of the gel coat, the added auxiliary materials, and quality control, the final ...

AI Technical Summary

Problems solved by technology

[0004] 1. The viscosity is high, it is not easy to spray, and it is not convenient to operate during the spraying process;

[0005] 2. Usually use volatile thinners such as styrene or acetone, which will affect the health of the staff and pollute

[0006] pollution environment, and prone to pinholes, affecting the surface quality;

[0007] 3. Harsh curing conditions, low hardness after curing, poor wear resistance, poor heat resistance;

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